{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["company advisors", "company major shareholders", "company shareholder among major shareholders", "location contains"], "input": "Tyler Cowen , a professor of economics at George Mason University and the author of '' Good and Plenty : The Creative Successes of American Arts Funding , '' said there was little solid research measuring the economic impact of arts centers on a city , although there was for sports stadiums ."}
{"company advisors": [], "company major shareholders": [], "company shareholder among major shareholders": [], "location contains": []}